The chemical contamination of water is increasingly evident, and the lack of alternatives for water treatment is one of the main problems that leads to the contamination of rivers, lagoons, wetlands and others. The biomass of Eichhornia crassipes is an alternative, since it retains heavy metals due to its great bioadsorption capacity in its vegetal structure. The objective of this research is to develop microspheres with dry and pulverized biomass of the roots E. crassipes, combining them with sodium tripolyphosphate for the adsorption of chromium from the waters of tanneries. The pH, the initial concentration and the ideal amount of these microspheres were evaluated together with the adsorption isotherms and the second-order adsorption model. There was an interesting capacity of chromium(VI) adsorption of 7.7 mg/g. The best adjusted isotherm model was the Langmuir model, and the different eliminations were adjusted to a second-order adsorption model, demonstrating that this process of adhesion is governed by a chemisorption process. It was concluded that those microspheres are one alternative for treatment of water contaminated with different heavy metals and could be used in great-scale industry.

中文翻译：

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使用水葫芦 (Eichhornia crassipes) 开发微球来处理含 Cr(VI) 的污染水

水的化学污染越来越明显，缺乏水处理替代品是导致河流、泻湖、湿地等受到污染的主要问题之一。Eichhornia crassipes 的生物质是另一种选择，因为它的植物结构具有很强的生物吸附能力，因此保留了重金属。本研究的目的是开发具有干燥和粉碎的 E. crassipes 根生物质的微球，将它们与三聚磷酸钠结合用于从制革厂的水中吸附铬。这些微球的 pH 值、初始浓度和理想量与吸附等温线和二级吸附模型一起评估。铬 (VI) 的吸附容量为 7.7 毫克/克。最佳调整等温线模型是朗缪尔模型，不同的消除被调整为二阶吸附模型，表明这种粘附过程是由化学吸附过程控制的。得出的结论是，这些微球是处理受不同重金属污染的水的一种替代方法，可用于大规模工业。